Anextruder screw mbiyandi mtima wa pulasitiki extruder - chomangira chozungulira mkati mwa mbiya yotenthedwa yomwe imasungunula pulasitiki ndikuyipopera patsogolo pa kukanikiza kokhazikika. Kusankha koyenera kumabwera pa zinthu zitatu: ndimtundu(zowononga imodzi, zomangira ziwiri, conical kapena zofananira), thezakuthupiimayenera kuthamanga (yomwe imayika pamwamba - yopangidwa ndi nitrided kuti ikhale yoyera, ya bimetallic ya abrasive kapena corrosive), ndi momwe imakhalira.kutchulidwa ndi kumanga. Konzani izo ndipo zimatenga zaka. Bukuli likudutsa muzonse zitatu.
Chirichonse chimene inu extrude - chitoliro, mbiri, filimu, pepala, pawiri, kapena pellets - ndiextruder screw mbiyandi gawo lomwe likugwira ntchito yeniyeni. Ndilonso gawo lomwe limavala, komanso lomwe lingasankhe ngati mzere wanu ukuyenda bwino komanso mwatchutchutchu kapena kumenyana nanu pazabwino komanso nthawi yopumira. Bukuli limakokera phunziro lonse palimodzi: chomangira mbiya ndi chiyani, mitundu yake, zida, momwe mungagwirizanitse chimodzi ndi zinthu zanu, ndi momwe mungatchulire cholowa chomwe chimakhalapo. Tapanga zomangira ndi migolo kwa zaka zopitilira 20, kotero tizisunga zowongoka komanso zothandiza, ndikulozerani maupangiri akuya komwe mukuwafuna.
Kodi Extruder Screw Barrel Ndi Chiyani?
Anextruder screw mbiyandi phata la pulasitiki extruder: zomangira ndendende makina akutembenukira mkati mwa mbiya yamphamvu yotentha. Pulasitiki yolimba - ma pellets kapena ufa - amapita kumapeto kwa chakudya. Pamene wononga chizungulira, kutentha kuchokera ku mbiya ndi kukameta ubweya kuchokera ku wononga kumasungunula zinthuzo, ndipo wononga geometry imatumiza ndikuyikakamiza, ndikukankhira yunifolomu kusungunuka kupyolera mukufa kumapeto kwakutali.
Mtsuko ndi mbiya ndi ziwiri zofanana, osati magawo awiri osiyana. Chilolezo chaching'ono pakati pa ndege zomangira ndi mbiya ndizomwe zimawongolera kutulutsa ndi kusungunuka - kutsegula chilolezocho chifukwa chakuvala ndipo makina amataya zonse. Ichi ndichifukwa chake awiriwa adapangidwa, kumangidwa, ndikusinthidwa palimodzi, komanso chifukwa chake mbiya yomangira imakhala pakatikati pa njira iliyonse yotulutsa kapena jekeseni.
Momwe Screw Barrel Imagwirira Ntchito
Zomangira zambiri za extruder zimagwira ntchito yawo m'magawo atatu motsatira utali wa screw. Thezone chakudyaamatenga zinthu zolimba ndikuyamba kuzipititsa patsogolo. Thecompress zone- pomwe chomangira chomangira chimakhala chosazama - chimaphatikizana ndikusungunula pulasitiki kupyolera mu kutentha ndi kukameta ubweya. Themetering zonendiye amapopa pulasitiki yosungunuka patsogolo pa mphamvu yokhazikika, yolamulirika, yokonzekera kufa.
Kutentha kumachokera ku malo awiri: zowotchera mbiya ndi makina ometa ubweya wa wononga akugwira polima. Muzilinganiza bwino ndi zinthu plasticizes wogawana popanda kutenthedwa. Zonsezi zimangogwira ntchito chifukwa cha kutsekedwa kwa screw-to-mbiya - ndizomwe zimalepheretsa kusungunuka kutsetsereka kumbuyo pa ndege. Mangani kulolerana ndi kulimba kwa pamwamba kumapangitsa kuti chilolezocho chikhale cholimba pakapita nthawi, ndichifukwa chake kusankha kwazinthu ndi kupanga zinthu kumakhala kofunikira monga kapangidwe ka screw.
Kuzungulira mbiya zopangira chotenthetsera zomangika m'magawo, chilichonse chimakhala ndi kutentha kokhazikika, ndikuzizira pamanja kuti chisungunukecho chisatenthe. Pamapeto pake, ufa umapatsa kusungunuka mawonekedwe ake omaliza. Ntchito ya msonkhano ndikupereka zomwe zimasungunuka zomwe zimakhala zofanana ndi kutentha ndi kupanikizika - chifukwa kusiyana kulikonse kumtunda kumawoneka ngati vuto la mankhwala kunsi kwa mtsinje.
Mitundu ya Extruder Screw Barrel
"Screw barrel" imakwirira makina angapo osiyana. Choyenera chimadalira ngati ndondomeko yanu ikufunikampopechuma kapenakusakanizaizo.
Single Screw
A screw imodziimayendetsa tsinde limodzi pabowo lozungulira. Imatumiza ndikupopera bwino kwambiri, zomwe zimapangitsa kuti ikhale yotsika mtengo kwambiri pakutulutsa kwamtundu umodzi wazinthu zosasinthika - chitoliro, mbiri, pepala, filimu, ndi zokutira waya. Chomwe sichichita ndikusakaniza mozama.
Twin Screw
Zomangira ziwiri zimayendetsa mitsinje iwiri yolumikizirana pachombo chachisanu ndi chitatu. Meshing ndiye mfundo yake: imapereka kusakanikirana kwakukulu, kutumizirana bwino, komanso kuwongolera molimba pakameta ubweya ndi nthawi yokhalamo, chifukwa chake zomangira ziwiri zimagwirira ntchito kuphatikiza, masterbatch, zotulutsa zotulutsa, ndi zinthu zovuta kapena zodzaza. Ngati mukuyeza ziwirizi, wotsogolera wathuscrew imodzi vs twin screw extrudersamapita mozama pa malonda.
Parallel vs Conical Twin Screw
Zomangira ziwiri zimagawanikanso ndi mawonekedwe. Aparallel twin screwimasunga m'mimba mwake nthawi zonse ndipo imagwiritsa ntchito modular,zinthu zosinthikanso - kusankha kosunthika kophatikiza ndi kutulutsa kwakukulu. Aconical twin screwma tapers kuchokera kumapeto kwa chakudya mpaka kumadzi opapatiza, kupereka chakudya chachikulu chapakhosi ndi torque yayikulu pa liwiro lotsika - makina apamwamba a chitoliro cholimba cha PVC ndi mbiri. Timawafananiza mwatsatanetsatane muconical vs parallel twin screw extruders.Zomangira ziwiri zimakhalanso zozungulira (zosakanikirana bwino) kapena zozungulira (kuthamanga kwakukulu, kofala kwa PVC).
Jekeseni Woumba Screw Barrel
Anjekeseni akamaumba screw mbiyaimagwira ntchito pa mfundo yomweyo ya melt-and-convey koma imapangidwira kusinthasintha kwa makina a jakisoni m'malo mongotulutsa mosalekeza. Maonekedwe a pamwamba ndi zinthu zomwe zili pansipa zimagwira ntchito mofananamo.
Mwachidule, nayi momwe mitundu ikuluikulu imayendera:
| Mtundu | Zabwino kwambiri za | Kusakaniza | Zodziwika bwino |
|---|---|---|---|
| Single screw | Kutulutsa kwamphamvu kwambiri kwa chinthu chimodzi | Zochepa | Chitoliro, mbiri, pepala, filimu |
| Parallel mapasa | Kuphatikiza, kutulutsa kwakukulu, kusinthasintha | Wapamwamba | Compounds, masterbatch, pellets |
| Conical mapasa | Chitoliro chophatikizika cha PVC & mbiri | Wapamwamba | Chitoliro cha UPVC, mbiri, WPC |
| jekeseni screw | Jekeseni akamaumba mkombero | Zimasiyana | Zigawo zoumbidwa |
Kumene Migolo ya Extruder Screw Imagwiritsidwa Ntchito
Chigawo chapakati chomwechi chikuwonekera pamakampani onse apulasitiki, opangidwira ntchito yomwe ilipo. Mu mizere ya chitoliro ndi mbiri imapanga PVC, PE, ndi PPR. Mufilimu ndi pepala amadyetsa ufa umene umapanga ma CD ndi bolodi. Pophatikizira amaphatikiza ma polima okhala ndi zodzaza, ma pigment, ndi zowonjezera kukhala ma pellets, ndipo imayendetsanso kupanga masterbatch. Imayendetsa mizere yobwezeretsanso yomwe imabwezeretsanso zinyalala ndi kugaya, chingwe ndi zokutira waya, ndi migolo yobwereza mkati mwa makina omangira jakisoni. Kulikonse kumene pulasitiki imasungunuka ndi kuumbika, wononga ndi mbiya zimasungunuka. Zomwe zimasintha kuchokera kumakampani ena kupita kwina ndi mtundu, pamwamba, ndi geometry - ndichifukwa chake kusamala kumafunika kwambiri kuposa nambala yamakasitomala.
Screw Barrel Materials ndi Kuchiza Pamwamba
Zomangira mbiya zimakhala m'malo olangidwa - kutentha, kupanikizika, kukangana, komanso zinthu zambiri zowononga kapena zowononga. Chitsulo chapansi chimapereka mphamvu; mankhwala pamwamba amaupatsa kuvala ndi dzimbiri kukana. Pamwamba pawiri amalamulira.
Base Steel ndi Nitriding
Pansi wamba ndi nitriding zitsulo monga38CrMoAlA. Gesi nitriding imaumitsa chowonda chowonda pamwamba, kupereka kukana kwabwino kwa ma resin oyera, osadzazidwa monga PE, PP, ndi ABS pamtengo wabwino. Ndi nitridedscrew mbiyaNdi njira yabwino komanso yodalirika pamene zinthu sizikhala zowononga kapena zowononga.
Bimetallic
Pogwiritsa ntchito zowononga kapena zowononga, mbiya ya bimetallic imalumikiza chiwombankhanga cholimba kwambiri, chokhuthala mkati mwa bore - faifi tambala yopangira dzimbiri, tungsten-carbide-rich for abrasion - pazitsulo zolimba. Zimawononga ndalama zambiri, koma zimatenga nthawi yayitali pomwe ma nitrided surface amadutsa. Pamigolo yathu ya bimetallic timatengera kumtunda kwa 62 HRC, kumene masitolo ambiri amaima pa 58.bimetallic vs nitrided screw migolo.
Screw Imathandizidwanso
Kuwumitsa pamwamba si ntchito ya mbiya chabe. Kuphatikizanso ndi nitriding, ndege zomata nthawi zambiri zimakhala zolimba - cholumikizira chosamva kuvala chowotcherera pamalo owulukira, malo ovala kwambiri pa screw - kotero zomangira zimayenderana ndi bore. Ngati screw ndi mbiya kuvala pamitengo yosiyana, chilolezocho chimasokonekera ndipo mawonekedwe amasokonekera, kotero awiriwo amawumitsidwa kuti agwire ntchito ndikuvala ngati awiri ofananira, osati ngati magawo osiyana.
Kufananiza Screw Barrel ndi Zinthu Zanu
Apa ndipamene zisankho zambiri za screw-barrel zimapambana kapena kutayika. Zomwe mumayendetsa zimayika zomwe mukufuna - osati mwanjira ina. Mapu ofulumira:
| Zakuthupi | Chiwopsezo chachikulu ku mbiya | Analimbikitsa pamwamba |
|---|---|---|
| Oyera PE / PP / ABS | Kuvala mofatsa | Nitrided |
| Zithunzi za Zithunzi za PVC | Kuwonongeka + kwina kwina | Bimetallic (yopangidwa ndi nickel) |
| Magalasi odzaza / mchere | Kupweteka kwakukulu | Bimetallic (wolemera kwambiri wa carbide) |
| WPC (matabwa + filler) | Abrasion kwambiri (+ dzimbiri ngati PVC-based) | Bimetallic (wolemera kwambiri wa carbide) |
| Zakudya zobwezerezedwanso/zowonongeka | Abrasion + osadziwika | Bimetallic |
Zida ziwiri zimayenera buku lawo lamasewera.Zithunzi za Zithunzi za PVCndi zowononga chifukwa zimatulutsa hydrochloric acid pamene zikuyenda, choncho zimafunika kuti zisawonongeke ndi bimetallic pamwamba.WPCndi chimodzi mwa zinthu zowononga kwambiri mu extrusion, chifukwa cha matabwa ake ndi mineral filler, choncho amafunikira aloyi wosanjikiza wovuta kwambiri mukhoza kuika mu bore. Onetsani pamwamba pa zinthuzo, nthawi zonse.
Zofunika Kwambiri: Diameter, L / D ndi Compression
Kupitilira mtundu ndi pamwamba, zofotokozera zochepa zimapanga momwe mbiya ya screw imagwirira ntchito. Simufunikanso kukhala wopanga zomangira kuti mupange imodzi, koma zimathandiza kudziwa zomwe akutanthauza.
- Diameter- kukula kwa makina anu ndi zomwe mukufuna. Zopangira ndi migolo amapangidwa kudutsa ma diameter osiyanasiyana kuti agwirizane ndi chilichonse kuyambira mizere yaying'ono mpaka ma extruder akulu.
- Chiwerengero cha L/D- kutalika kwa screw kugawanika ndi m'mimba mwake. L / D yayitali imapereka nthawi yambiri yosungunuka ndi kusakaniza; chachifupi ndi chophatikizika. Mtengo woyenera umadalira zinthu ndi ndondomeko.
- Compression ratio- kuchuluka kwa wononga njira kuchokera ku chakudya kupita ku mita. Kuponderezana kwapamwamba kumagwira ntchito zina zolimba; ma polima osamva kutentha ngati PVC amakonda chiŵerengero chocheperako.
Izi zimayikidwa kuzinthu ndi ntchito, ndichifukwa chake mbiya yopangidwa-kuti-spec imamenya generic imodzi. Perekani wopanga wanu makina, zinthu, ndi zotulutsa, ndipo geometry ikutsatira kuchokera pamenepo.
Mavuto Odziwika Ndi Zomwe Amalozera
Mzere ukachoka patali, njirayo nthawi zambiri imabwerera ku screw ndi mbiya. Kuzindikira mwachangu:
- Zotulutsa zikugwera pa liwiro lomwelo wononga- chilolezo chovala, chizindikiro choyamba choyamba.
- Kuthamanga kapena kusakhazikika kuthamanga- kuvala, kapena chakudya kapena kutentha.
- Madontho akuda ndi kuwonongeka- zinthu zomwe zatsala pang'ono kung'ambika kapena kukhala pamalo ochita dzimbiri.
- Zosakaniza zosakanizika kapena zosasungunuka- mtundu wolakwika wa screw pa ntchitoyo, kapena zomangira zotha.
- Kuyika pa phula kapena bowa- dzimbiri, nthawi zambiri malo olakwika pazinthu.
Chizindikiro chilichonse chikhoza kukhala ndi zifukwa zingapo, koma ziwiri kapena zitatu palimodzi pafupifupi nthawi zonse zimaloza mbiya yowonongeka kapena yolakwika. Kuyeza mavalidwe kumakuuzani - komanso ngati kukonza ndikukonza kapena kusintha.
Kuvala, Kusamalira ndi Kusintha
Mitsuko iliyonse imavala pomaliza - funso lokha ndilakuti mwachangu bwanji, ndipo zimatengera zida ndi momwe makinawo amagwirira ntchito. Wear imawoneka ngati ikutsika pa liwiro lomwelo, kukwera, kusakanikirana kosakwanira, madontho akuda, kapena kutentha kosungunuka. Chifukwa chake ndi chilolezo pakati pa screw ndi mbiya kutsegula kulolerana kale.
Mukawona zizindikilozo, yesani musanachitepo kanthu: kuchuluka kwa zomangira, mbiya, ndi chilolezo cha radial motsutsana ndi choyambirira. Nthawi zina zowononga zimatha kumangidwanso pomwe mbiya ikadali yabwino; pamene bore wavala kale kulolerana, m'malo nthawi zambiri kukonza ndalama. Mtsogoleri wathu kunthawi yoti mulowetse mbiya yonyeketsaamadutsa poyezera kuvala ndikusankha kukonzanso ndikusintha. Zizolowezi zingapo zimatambasulira moyo wautumiki: fananiza pamwamba ndi zinthu, sungani zowononga muzakudya, sungani kutentha mosiyanasiyana, ndikuwerengera zololeza zolembera pa msonkhano uliwonse.
Momwe Mungasankhire ndi Kufotokozera Mgolo wa Extruder Screw
Kuchikoka palimodzi, kusankha screw mbiya ndi zisankho zitatu mu dongosolo:mtundu, ndiyepamwamba, ndiyekufotokoza. Yang'anani mwa iwo ndipo simudzalakwitsa.
- Mtundu- kodi ndondomeko yanu imapopa chinthu chimodzi (zowononga) kapena kusakaniza ndi kuphatikizira (mapasa awiri)? PVC yaying'ono kapena mbiri yogwira ntchito kuti ikhale yowoneka bwino; mkulu linanena bungwe ndi kusinthasintha kuloza kuti kufanana.
- Pamwamba- nitrided kwa utomoni woyera, bimetallic kwa abrasive kapena dzimbiri zipangizo. Mukakayika pa zinthu zodzazidwa kapena PVC, pitani bimetallic.
- Kufotokozera- m'mimba mwake, L / D, ndi kukakamiza kofanana ndi makina anu, zinthu, ndi zotuluka.
Kuti mupeze mawu olondola komanso mbiya yomwe imagwera molunjika, perekani wopanga makina anu kupanga ndi kutengera chitsanzo, screw diameter ndi L/D (kapena chojambula choyambirira), katundu ndi zodzaza, ndi zomwe mukufuna. Palibe kujambula? Chitsanzo chotopa ndi chokwanira kusinthira-injiniya m'malo mwake - kapena chotukuka chokhala ndi malo olimba kuposa gawo lomwe mukusiya.
Chifukwa Chiyani Mumagwira Ntchito Ndi Nanhaiya
Takhala zaka zopitilira makumi awiri tikumanga zomangira ndi migolo yamtundu uliwonse -screw imodzi, parallel twin screw, conical twin screw,ndijekeseni akamaumba- mu 38CrMoAlA zitsulo zopangidwa ndi nitrided ndi bimetallic alloys, zokhala ndi kulimba kwa bimetallic mpaka 62 HRC, kulolerana, komanso kuyesa kwamphamvu pagulu lililonse. Ndi makasitomala opitilira 500 komanso opitilira zaka makumi awiri, timapanga zosinthira zomwe zimagwirizana ndi mitundu yayikulu monga KraussMaffei, Cincinnati, ndi Jwell, pogwiritsa ntchito makina anu, zojambula, kapena zitsanzo. Tiuzeni zinthu zanu, makina, ndi zotuluka, ndipo mudzakhala ndi malingaliro ogwirizana ndi mawu anu mkati mwa maola khumi ndi awiri.
Mukufuna mbiya yoyenera, kapena chosinthira mzere wanu? Tumizani makina anu, zinthu, ndi zotulutsa - pezani malingaliro ndi mawu pasanathe maola 12.
Pezani MawuMafunso Ofunsidwa Kawirikawiri
Kodi mbiya ya extruder screw ndi chiyani?
Ndilo gawo lalikulu la pulasitiki extruder - chozungulira chozungulira mkati mwa mbiya yotenthedwa. Zimatengera pulasitiki yolimba kumapeto kumodzi, kuisungunula ndi kutentha ndi kukameta ubweya, ndi mapampu a yunifolomu amasungunula mbali ina ndi kupanikizika kokhazikika. Zomangira ndi mbiya zimagwira ntchito ngati zofananira, ndipo kalozera kakang'ono pakati pawo kamayang'anira zotuluka ndi zabwino.
Kodi mbiya ya extruder screw imapangidwa ndi chiyani?
Pansi pake nthawi zambiri amakhala chitsulo cha nitriding ngati 38CrMoAlA, choumitsidwa ndi nitriding ya gasi pama utomoni oyera. Pazinthu zowononga kapena zowononga ndi bimetallic - wosanjikiza wolimba, wosawonongeka komanso wosachita dzimbiri wosakanikirana mkati mwa bowo pamwamba pa chitsulo cholimba. Kumwamba kumasankhidwa pazinthu zomwe mumayendetsa.
Kodi mitundu yayikulu ya screw barrel ndi iti?
Single screw ndi twin screw. Zomangira ziwiri zimagawanika kukhala zofananira ndi zowoneka bwino, ndikukhala mozungulira komanso mozungulira, kuphatikizanso pali migolo yomangira jekeseni. Single zomangira mpope kwa mkulu-voliyu extrusion; zomangira amapasa kusakaniza ndi pawiri; mapasa owoneka bwino amavala PVC yaying'ono komanso mizere yambiri.
Kodi mbiya ya extruder screw imatha nthawi yayitali bwanji?
Wosamalidwa bwino nthawi zambiri amakhala zaka 3 mpaka 10. Zimatengera zakuthupi, chithandizo chapamwamba, momwe zimagwirira ntchito, komanso kukonza - zowononga ndi zowononga zimafupikitsa, ma resin oyera ndi bimetallic pamwamba amakulitsa.
Kodi ndingasankhe bwanji yoyenera?
Masitepe atatu: sankhani mtundu womwe ndondomeko yanu ikufuna, sankhani malo azinthu zanu, kenaka mufanane ndi m'mimba mwake, L/D, ndi kukanikiza ntchitoyo. Perekani wopanga makina anu chitsanzo, zinthu, ndi zotulutsa - chojambula kapena chitsanzo chimapangitsa kuti zikhale zenizeni.
Kodi mungasinthe makina amtundu uliwonse?
Inde. Timamanga zomangira ndi mbiya zolowa m'malo zomwe zimakwanira mitundu yayikulu yotulutsa ndi jakisoni - KraussMaffei, Cincinnati, Jwell - kuchokera pamakina anu, chojambulira, kapena zitsanzo. Tumizani zambiri za mtengowo mkati mwa maola 12.
